Digestive System Physiology Absorption and Secretion

Amylase is secreted by

• salivary glands only

• pancreatic glands only

• Salivary and pancreatic glands

• liver and small intestine

Protein digestion takes place

• in the mouth

• in the stomach

• in the stomach and duodenum

• all of the above

Bile is produced by the

• Liver

• Pancreas

• Small Intestine

• Large Intestine

Tags

NGSS.MS-LS1-7

The protective substance that lines the stomach is called

• Mucus

• Saliva

• Pepsin

• Trypsin

Waves of contractions that move food one way through the digestive system are called

• Impulse

• Peristalsis

• Action Potential

• Metabolism

Most nutrient absorption occurs in the ________________ .

• mouth

• stomach

• large intestines

• small intestines

This is the enzyme that works on protein.

• pepsin
• HCl
• Bicarbonate
• Lactase

Tags

NGSS.MS-LS1-7

This is the enzyme that breaks down the sugar lactose in your small intestine.

• pepsin
• HCl
• Bicarbonate
• Lactase

Which of these increase does not allow the ileum to be adapted for absorption

• large surface area

• richly supplied with blood capillaries and lymphatic capillaries

• ileum is one cell thick

• long

In which order do these events occur in human nutrition? *2014 Q25

• digestion-ingestion-absorption-assimilation

• digestion-ingestion-assimilation-absorption

• ingestion-digestion-absorption-assimilation

• ingestion-digestion-assimilation-absorption